High frequency ferromagnetic resonance measurements in magnetic fluids

被引：7

作者：

Fannin, PC ^{[1
]}

Scaife, BKP ^{[1
]}

Giannitsis, AT ^{[1
]}

Mac Oireachtaigh, C ^{[1
]}

机构：

[1] Univ Dublin Trinity Coll, Dept Elect & Elect Engn, Dublin 2, Ireland

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 289卷

关键词：

magnetic fluids; ferromagnetic resonance; complex susceptibility;

D O I：

10.1016/j.jmmm.2004.11.046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurement of the frequency and field-dependent, complex susceptibility, chi(omega), H) of magnetic fluids is a proven method for investigating the resonant and dynamic properties of magnetic fluids. Here we demonstrate how, parameters, such as the anisotropy constant, K, the precessional decay time, tau(O) and the gyromagnetic constant, gamma, can be obtained by plotting data obtained at constant frequency and variable field in a Cole-Cole format and then fitting the Cole-Cole plots to the equations of Landau and Lifshitz. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：159 / 161

页数：3

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